Multispectral metasurface hologram at millimeter wavelengths.

Published

Journal Article

We demonstrate a computer-generated metasurface hologram in which four distinct images are encoded at four different W-band (75-110 GHz) frequencies. The metasurface hologram consists of a planar array of resonant metamaterial elements excited by a collimated reference beam incident on the hologram at an oblique angle. Each of the images is encoded by a subset of metamaterial elements that are resonant at the specific excitation frequency and are spatially positioned to achieve a desired phase distribution in the plane in conjunction with the reference wave. The phase-only hologram is optimized using the Gerschberg-Saxton algorithm. The four well-defined images are produced at specific distances within the Fresnel zone of the aperture.

Full Text

Duke Authors

Cited Authors

  • Caira, NW; Smith, DR

Published Date

  • January 2018

Published In

Volume / Issue

  • 57 / 1

Start / End Page

  • A19 - A25

PubMed ID

  • 29328125

Pubmed Central ID

  • 29328125

Electronic International Standard Serial Number (EISSN)

  • 1539-4522

International Standard Serial Number (ISSN)

  • 1559-128X

Digital Object Identifier (DOI)

  • 10.1364/ao.57.000a19

Language

  • eng